It's said that they ________ a better life ever since they moved to the US.
A．had enjoyedB．have been enjoying
C．were enjoyingD．would enjoy
B
B 考察動(dòng)詞時(shí)態(tài)。句義：據(jù)說(shuō)，他們自從搬到美國(guó)后一直過(guò)著更好的生活。根據(jù)句義可知，此處表示動(dòng)作從過(guò)去某一時(shí)間開始，一直延續(xù)到現(xiàn)在，可能還要繼續(xù)下去。故應(yīng)該使用現(xiàn)在完成進(jìn)行時(shí)。故B正確。
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